Cool cabinets! Good resolution/cleanup.
I just want to point that black is not the best option as a background color, since the vast majority of arcade cabinets are black. So depending on the lighting, you can barely see the edges of the cabinets, and that's no good, since we all want to see the cabinet highlighted in the picture, and not fading against the background.
But since all cleanups have black backgrounds already, I suppose you guys wouldn't want to change it at this point
BUT... if this eventually happens, I guess that a good color would be grey (light gray or dark gray) since there are not so many cabinets that uses this color, if any of them.